1、華中師范大學碩士學位論文γ射線暴能譜特征及能源機制研究姓名：肖飛申請學位級別：碩士專業(yè)：理論物理指導教師：鄭小平2002.11.1⑥碩士學位論文MAsTER’STIlESISAbstractGammarayburstsareastrophysicalphenomenawithhighenergyandshortscales，whicharefirstdiscoveredin1970sTherearethreestagesinthehis

2、toryoftheresearches：thestudiesofspectralstructuresatearlystage(1973～1991)，thedebatesofthesourcedistancesfromus(1991～1997)andthestudiesoftheafterglowsofYraybursts(1997～)InthispaperweanalyzetheobservablecharacteristicsofYr

3、ayburstsindetail，includingtimescales，energyspectraandspacedistributionItisshowedthatthetimescalesrangefromOOIsto1000s，theenergyspectrarangefrom1KeVto100MeVandyraybumtshaveanisotropicdistributioninga／acticsphereSometypica

4、lburstsarediscussedandregardedastwotypesofsources：classicalburstandsoftrepeaterThefireballmodelisuniversldlyacceptedasthestandardmodelinexplainingY—rayburstsHereweadequatelyreviewthemodelandstudyafewmechanismswhichleadto

5、theproductionofthefireballItispointedoutthatthemodelsinvolvingstrangestarshavetheadvantageforexplainingtheenergySOUrCeofbursts，whichCarlovercomethebaryonpollutionofthefireball，KeyWords：GammarayburstObservedcharacteristic